1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in 12 * the documentation and/or other materials provided with the 13 * distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <gtest/gtest.h> 30 31 #include <errno.h> 32 #include <sys/sem.h> 33 34 #include "TemporaryFile.h" 35 36 TEST(sys_sem, smoke) { 37 if (semctl(-1, 0, IPC_RMID) == -1 && errno == ENOSYS) { 38 GTEST_LOG_(INFO) << "no <sys/sem.h> support in this kernel\n"; 39 return; 40 } 41 42 // Create a semaphore. 43 TemporaryDir dir; 44 key_t key = ftok(dir.dirname, 1); 45 int id = semget(key, 1, IPC_CREAT|0666); 46 ASSERT_NE(id, -1); 47 48 // Check semaphore info. 49 semid_ds ds; 50 memset(&ds, 0, sizeof(ds)); 51 ASSERT_EQ(0, semctl(id, 0, IPC_STAT, &ds)); 52 ASSERT_EQ(1U, ds.sem_nsems); 53 54 ASSERT_EQ(0, semctl(id, 0, GETVAL)); 55 56 // Increment. 57 sembuf ops[] = {{ .sem_num = 0, .sem_op = 1, .sem_flg = 0 }}; 58 ASSERT_EQ(0, semop(id, ops, 1)); 59 ASSERT_EQ(1, semctl(id, 0, GETVAL)); 60 61 // Test timeouts. 62 timespec ts = { .tv_sec = 0, .tv_nsec = 100 }; 63 ops[0] = { .sem_num = 0, .sem_op = 0, .sem_flg = 0 }; 64 errno = 0; 65 ASSERT_EQ(-1, semtimedop(id, ops, 1, &ts)); 66 ASSERT_EQ(EAGAIN, errno); 67 ASSERT_EQ(1, semctl(id, 0, GETVAL)); 68 69 // Decrement. 70 ops[0] = { .sem_num = 0, .sem_op = -1, .sem_flg = 0 }; 71 ASSERT_EQ(0, semop(id, ops, 1)); 72 ASSERT_EQ(0, semctl(id, 0, GETVAL)); 73 74 // Destroy the semaphore. 75 ASSERT_EQ(0, semctl(id, 0, IPC_RMID)); 76 } 77 78 TEST(sys_sem, semget_failure) { 79 errno = 0; 80 ASSERT_EQ(-1, semget(-1, -1, 0)); 81 ASSERT_TRUE(errno == EINVAL || errno == ENOSYS); 82 } 83 84 TEST(sys_sem, semctl_failure) { 85 errno = 0; 86 ASSERT_EQ(-1, semctl(-1, 0, IPC_RMID)); 87 ASSERT_TRUE(errno == EINVAL || errno == ENOSYS); 88 } 89 90 TEST(sys_sem, semop_failure) { 91 errno = 0; 92 ASSERT_EQ(-1, semop(-1, nullptr, 0)); 93 ASSERT_TRUE(errno == EINVAL || errno == ENOSYS); 94 } 95 96 TEST(sys_sem, semtimedop_failure) { 97 errno = 0; 98 ASSERT_EQ(-1, semtimedop(-1, nullptr, 0, nullptr)); 99 ASSERT_TRUE(errno == EINVAL || errno == ENOSYS); 100 } 101
